A can do a work in 24 days. B is 20% more efficient than A. If C can do the work in 10 more days than B, find the time taken by A and C together to complete the work.
A takes 24 days to complete a work. B is 20% more efficient than A, hence B will take (24*100)/120 = 20 days. C takes (20+10) = 30 days. Time taken by A & C in completing the work = (24*30)/(24+30) = (24*30)/54 = 40/3 days.
In each of the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.
Statements:
I. Some pens are pencils. II. All pencils are erasers.
Conclusions:
I. Some pens are erasers. II. No pens are erasers. III. Some erasers are pencils
A word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as shown in the given two matrices. The columns and rows of Matrix-I are numbered from 0 to 4 and that of Matrix-II are numbered from 5 to 9. A letter from these matrices can be represented first by its row and next by its column, for example 'K' can be represented by 01, 34, etc... and 'P' can be represented by 65, 99, etc... Similarly, you have to identify the set for the word "BLAND".
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